
/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.psi.impl.source.tree;

import com.intellij.lang.Language;
import com.intellij.psi.*;
import com.intellij.psi.templateLanguages.OuterLanguageElement;
import org.jetbrains.annotations.NotNull;

public class PsiErrorElementImpl extends CompositePsiElement implements PsiErrorElement {
    private final String myErrorDescription;

    public PsiErrorElementImpl(String errorDescription) {
        super(TokenType.ERROR_ELEMENT);
        myErrorDescription = errorDescription;
    }

    @Override
    public String getErrorDescription() {
        return myErrorDescription;
    }

    @Override
    public void accept(@NotNull PsiElementVisitor visitor) {
        visitor.visitErrorElement(this);
    }

    public String toString() {
        return "PsiErrorElement:" + getErrorDescription();
    }

    @Override
    @NotNull
    public Language getLanguage() {
        PsiElement master = this;
        while (true) {
            master = master.getNextSibling();
            if (master == null || master instanceof OuterLanguageElement) {
                PsiElement parent = getParent();
                return parent == null ? Language.ANY : parent.getLanguage();
            }
            if (master instanceof PsiWhiteSpace || master instanceof PsiErrorElement) continue;
            return master.getLanguage();
        }
    }
}